CN101595639A - Damping element - Google Patents
Damping element Download PDFInfo
- Publication number
- CN101595639A CN101595639A CN200780050584.1A CN200780050584A CN101595639A CN 101595639 A CN101595639 A CN 101595639A CN 200780050584 A CN200780050584 A CN 200780050584A CN 101595639 A CN101595639 A CN 101595639A
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- China
- Prior art keywords
- current
- damping element
- section
- conducting line
- busbar
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- 238000013016 damping Methods 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 abstract description 17
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1791—Combined LC in shunt or branch path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2240/00—Indexing scheme relating to filter banks
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
- Filters And Equalizers (AREA)
Abstract
The present invention relates to a kind of damping element.According to the present invention, this damping element has two bus section, busbar sections (46,48) and two conducting line segments (50,52), wherein, each bus section, busbar section (46,48) respectively with a conducting line segment (50,52) parallel connection, described bus section, busbar section (46,48) spatially keeps at a certain distance away and is arranged in parallel, described conducting line segment (50,52) be made of the good material of electric conductivity, described bus section, busbar section (46,48) is made of the bad material of electric conductivity.Can in current transformer, carry out effective damping whereby to high-frequency current with a plurality of distributed Voltage intermediate circuits, but the loss power in the voltage intermediate circuit does not have obvious rising, thereby avoid described capacitor (10 with current transformer of a plurality of distributed Voltage intermediate circuits, 12,24 and 28) oversize for the effective current of the voltage intermediate circuit of described current transformer.
Description
Technical field
The present invention relates to a kind of damping element.
Background technology
The traction convertor that is used for electric locomotive has the current transformer with a plurality of distributed Voltage intermediate circuits usually.Fig. 1 has carried out detailed icon to the equivalent circuit diagram of this traction convertor.In this equivalent circuit diagram, each current transformer 2 and 4 all has a net side converter and load-side current transformer 6 and 8.That be used as net side converter 6 is so-called four quadrant convertor (4QS), and wherein, as load-side current transformer 8 is from the commutator pulse current transformer.Each current transformer 2 of traction convertor and these two current transformers 6 and 8 of 4 all are connected in parallel to each other by the intermediate circuit 10 and 12 that is made of a plurality of capacitors in its DC voltage side.These intermediate circuit 10 of traction convertor and 12 are electrically connected each other by being electrically connected 14 and 16 (specific is bus), and link to each other with 4 DC voltage side contact with each current transformer 2 of traction convertor.Auxiliary converter 18 is in parallel with these intermediate circuit 10 and 12.For this reason, there is circuit breaker 22 in the connecting line 20 of auxiliary converter 18.The DC voltage side contact of auxiliary converter 18 is in parallel with capacitor 24.Also with to absorb circuit 26 in parallel, this absorbs circuit design is series resonant circuit, and is tuned as the frequency of the harmonic wave of intermediate circuit for current transformer 6 and 8 intermediate circuit 10 and 12.For this reason, this absorption circuit 26 has capacitor 28.From this equivalent circuit diagram, also can find out, can a certain mode the connection 14 between two current transformers 2 and 4 of traction convertor be disconnected, make to absorb circuit 26 and keep capacitor 10 or 12 states in parallel with current transformer 2 or 4.Two circuit breakers 30 of layout and 32 in 14 must connected for this reason.
Be used for transmission of power between the voltage intermediate circuit of two current transformers 2 of traction convertor and 4 from the direct current that is electrically connected 14 and 16 and flows through (specific be bus).Because each current transformer 2 of traction convertor and 4 net side converter 6 adopt single-phase design, therefore, be electrically connected in 14 and 16 and also can flow through a electric current with two mains frequencies.Under the acting in conjunction that is electrically connected 14 and 16 leakage inductance and intermediate circuit 10,12 and capacitor 24,28, can produce the higher order resonances circuit.Current transformer 2 or variable flow valve each switching process on the voltage intermediate circuit of traction convertor of 4 all can excite this resonant circuit, produce the underdamping high-frequency current between the voltage intermediate circuit thereby make.This electric current can give intermediate circuit 10 and 12 and the capacitor 24 of auxiliary converter 18 bring additional heat load.
That Fig. 2 shows is single condenser current i
C2, i
C4, i
CHAnd i
CSGraph of a relation with frequency.As shown in the figure, when exciting the higher order resonances circuit, current transformer 2,4 and 18 and all capacitors 10,12,24 and 28 of absorbing circuit 26 electric current all can take place amplifies.When being lower than resonance frequency, frequency component is waited to give these capacitors 10,12,14 and 28.When reaching resonance frequency, condenser current i
C2, i
C4, i
CHAnd i
CSBe exaggerated, during greater than resonance frequency, this exciting will be to condenser current i
C2, i
C4, i
CHAnd i
CSProduce Different Effects.
What Fig. 3 showed is the equivalent circuit diagram of traction convertor as shown in Figure 1, and this traction convertor is furnished with two open damping networks 34 and 36 from EP 1 450 475 A1.According to EP 1 450 475 A1, damping network 34 or 36 in parallel with the intermediate circuit of voltage intermediate circuit converter.Capacitor 10 or 12 is in parallel with damping network 34 or 36 respectively. Damping network 34,36 has series capacitors 38,40 and resistance 42,44.
That Fig. 4 shows is condenser current i
C2, i
C4, i
CHAnd i
CSGraph of a relation with frequency f.In order to show the effect of these two damping networks 34 and 36, current characteristics curve shown in Figure 2 and damping current characteristic curve are illustrated in the lump herein.The characteristic curve that dots is the current characteristics curve i through damping
C2, i
C4, i
CHAnd i
CSWhen frequency f was lower than resonance frequency, damping network 34 and 36 did not play a role.When reaching resonance frequency, the effect of damping network 34 and 36 performances is also limited.
Summary of the invention
Therefore, the objective of the invention is the well-known current transformer with a plurality of distributed Voltage intermediate circuits is improved, both reached high-frequency current is carried out damping, reduce the purpose of loss power again.
The solution of reaching this purpose is that damping element of the present invention is installed in the well-known current transformer with a plurality of distributed Voltage intermediate circuits.
By making damping element of the present invention have two current paths, promptly be used for the current path and the current path that is used for direct current and double frequency current component of high-frequency current component, can carry out independent optimization to every current path.The current path that is used for high-frequency current component is low inductance, but resistance is bigger, and the current path inductance that is used for direct current and double frequency current component is bigger, and resistance is less.In this way, can carry out damping to high-frequency current component on the one hand, can make direct current and double frequency current component only be subjected to the restriction of minimum level on the other hand, thereby guarantee to have the rising that minimum degree only takes place for loss power in the voltage intermediate circuit of well-known current transformer of a plurality of distributed Voltage intermediate circuits.
For mutually different two current paths of energy realization condition, be that first current path is selected the bad material of electric conductivity for use, be second current path is selected the good material of electric conductivity for use.Select for use high-grade steel as the bad material of electric conductivity, select for use copper as the good material of electric conductivity.For the inductance that can make first path is as much as possible little, the present invention is provided with two bus section, busbar sections, these two bus section, busbar sections spatially at interval minimum range extend parallel to each other.Second current path then is made of two conducting line segments, and these two conducting line segments are in parallel with a bus section, busbar section respectively.
Have two spatially at interval under the situation of the bus section, busbar section that extends parallel to each other of minimum range at this damping element of the present invention, can plain mode this damping element be incorporated in the bus-bar system of voltage intermediate circuit of voltage intermediate circuit converter with a plurality of distributed Voltage intermediate circuits.
The favourable design of other of damping element of the present invention can obtain in the subordinate claim.
Description of drawings
The invention will be further described by the execution mode of damping element of the present invention shown in the drawings below, wherein:
Fig. 1 is the equivalent circuit diagram with current transformer of a plurality of distributed Voltage intermediate circuits;
Fig. 2 is each condenser current of current transformer shown in Figure 1 and the graph of a relation of frequency;
Fig. 3 is the equivalent circuit diagram of the current transformer with known damping network as shown in Figure 1;
Fig. 4 is each condenser current of current transformer shown in Figure 3 and the graph of a relation of frequency;
Fig. 5 is a damping element of the present invention;
Fig. 6 is the equivalent circuit diagram of the current transformer with damping element as shown in Figure 5 as shown in Figure 1; And
Fig. 7 is the condenser current of current transformer shown in Figure 6 and the graph of a relation of frequency.
Embodiment
As shown in Figure 5, damping element of the present invention has 46,48 and two conducting line segments 50,52 of two bus section, busbar sections, and wherein, each bus section, busbar section 46,48 is in parallel with a conducting line segment 50 or 52 respectively.These two bus section, busbar sections 46 and 48 spatially interval minimum range are arranged in parallel.The value of this distance depends on the limiting value of electric clearance and creepage distance.Each bus section, busbar section 46,48 is in parallel with a conducting line segment 50 or 52 respectively.According to the inductance desired value of conducting line segment 50 or 52 and the desired value of second current path, this conducting line segment 50 or 52 is designed to have the coil of at least one wire turn, specific is air core coil.Each end of conducting line segment 50,52 all has a connection piece 54,56 or 58,60, and these connectors link to each other with bus section, busbar section 46,48 conductions.Bus section, busbar section 46 and 48 comprises high-grade steel, can make the current path that passes these bus section, busbar sections 46 and 48 have big resistance value whereby.The inductance value of passing the current path of these bus section, busbar sections 46 and 48 depends on the distance between these two bus section, busbar sections 46 and 48.Conducting line segment 50 and 52 can use copper cash, particularly copper tape conductor.Make the current path that passes these conducting line segments 50 and 52 have small resistance value whereby.By adopt this design for damping element, can obtain two current paths, wherein, first current path hangs down inductance, has the high electrical resistance level, and the second current path inductance is bigger, and resistance is less.
Adopt at described damping element under the situation of above-mentioned design, the high-frequency current component of intermediate circuit is passed through from first current path, and the DC component of intermediate circuit and two mains frequency current component then pass through from second current path.Owing to have only first current path to have big resistance, thereby have only the current component that from this current path, flows through just can be subjected to damping.The current component that is used for transmission of power between two voltage intermediate circuit of the current transformer with a plurality of distributed Voltage intermediate circuits is then unaffected, because according to damping element design of the present invention, this current component only flows on second current path.Under the situation of the current path that makes up damping element of the present invention with bus section, busbar section 46 and 48, can this damping element be incorporated in the bus-bar system of voltage intermediate circuit converter by plain mode with a plurality of distributed Voltage intermediate circuits, wherein, electrical connector 54,58 and 56,60 respectively bus section, busbar section 46 and 48 with the corresponding bus of the bus-bar system of voltage intermediate circuit converter with a plurality of distributed Voltage intermediate circuits between set up and be electrically connected.
Fig. 6 has carried out detailed icon to the current transformer with two distributed Voltage intermediate circuits and the equivalent circuit diagram of damping element of the present invention.This equivalent circuit diagram has carried out separately showing to two current paths of damping element of the present invention.The current path 62 that resistance is less, inductance is bigger is used for low-frequency current, and resistance is big, 64 in inductance less current path only is used for the higher electric current of frequency.In the case, have only the higher current component of frequency just can be subjected to damping.
That Fig. 7 shows is the condenser current i with current transformer of damping element of the present invention
C2, i
C4, i
CHAnd i
CSGraph of a relation with frequency f.Dotted portion is condenser current i
C2, i
C4, i
CHAnd i
CSThe damping current characteristic curve.Compare with execution mode with two distributed Voltage intermediate circuits and two damping networks 34 and current transformer of 36, in this execution mode that is equipped with damping element of the present invention for current transformer, the higher current component of frequency can be subjected to obviously bigger damping of intensity.Can significantly reduce the parasitic thermal load of capacitor 10,12,24 and 28 whereby, thereby avoid capacitor 10,12,24 and 28 for the effective current of the voltage intermediate circuit of current transformer, to have excessive electric capacity with two distributed Voltage intermediate circuits.
Claims (6)
1. damping element, it has two bus section, busbar sections (46,48) and two conducting line segments (50,52), wherein, each bus section, busbar section (46,48) respectively with a conducting line segment (50,52) parallel connection, described bus section, busbar section (46,48) spatially keeps at a certain distance away and is arranged in parallel, described conducting line segment (50,52) comprise the good material of an electric conductivity, described bus section, busbar section (46,48) comprises the bad material of an electric conductivity.
2. damping element according to claim 1 is characterized in that,
Described conducting line segment (50,52) formation one has the coil of at least one wire turn.
3. damping element according to claim 1 and 2 is characterized in that,
Each conducting line segment (50,52) has a connector (54,56 respectively at its end; 58,60), described connector links to each other with corresponding bus section, busbar section (46,48) conduction.
4. the described damping element of each claim in requiring according to aforesaid right is characterized in that,
Described conducting line segment (50,52) is a tape conductor.
5. the described damping element of each claim in requiring according to aforesaid right is characterized in that,
The material that described electric conductivity is good is a copper.
6. according to the described damping element of each claim in the claim 1 to 4, it is characterized in that,
The bad material of described electric conductivity is a high-grade steel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007006840.0 | 2007-02-12 | ||
| DE102007006840A DE102007006840B3 (en) | 2007-02-12 | 2007-02-12 | Traction power converter's damping unit for electrical locomotive, has two rail pieces and two conductor pieces, where rail pieces are arranged in parallel such that rail pieces are spatially distant from each other |
| PCT/EP2007/059286 WO2008098628A1 (en) | 2007-02-12 | 2007-09-05 | Attenuation element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101595639A true CN101595639A (en) | 2009-12-02 |
| CN101595639B CN101595639B (en) | 2013-05-22 |
Family
ID=38663133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780050584.1A Active CN101595639B (en) | 2007-02-12 | 2007-09-05 | Damping element |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8188807B2 (en) |
| EP (1) | EP2119004A1 (en) |
| CN (1) | CN101595639B (en) |
| DE (1) | DE102007006840B3 (en) |
| RU (1) | RU2400912C1 (en) |
| WO (1) | WO2008098628A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2548829T5 (en) | 2012-02-21 | 2024-07-22 | Alstom Holdings | DC Link Decoupling Circuit for Parallel Inverters |
| DE102013211411A1 (en) | 2013-06-18 | 2014-12-18 | Siemens Aktiengesellschaft | Device and method for monitoring a power semiconductor switch |
| US20190379285A1 (en) * | 2016-06-02 | 2019-12-12 | Nissan Motor Co., Ltd | Power conversion device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2782381A (en) * | 1946-01-30 | 1957-02-19 | Walter P Dyke | Filament voltage terminal for pulse transformer |
| DE7210297U (en) * | 1972-03-17 | 1972-11-23 | Siemens Ag | DAMPED THROTTLE COIL |
| JPS52147784A (en) * | 1976-06-02 | 1977-12-08 | Sumitomo Electric Ind Ltd | Method of manufacturing composite wires |
| JPS58203238A (en) * | 1982-04-20 | 1983-11-26 | Nippon Funmatsu Gokin Kk | Brake pad |
| US4724406A (en) * | 1986-07-21 | 1988-02-09 | Lewis Francis H | Device for attenuating noise in electrical apparatus |
| JPH08203574A (en) * | 1995-01-30 | 1996-08-09 | Kowa Kogyo Kk | Grounding device and its installation |
| JPH10214713A (en) * | 1997-01-29 | 1998-08-11 | Fuji Electric Co Ltd | Superconducting coil |
| FR2815768B1 (en) * | 2000-10-23 | 2003-01-17 | Ge Med Sys Global Tech Co Llc | MAGNETIC ROTOR FOR X-RAY TUBE ROTATING ANODE MOTOR |
| EP1450475A1 (en) * | 2003-02-19 | 2004-08-25 | ABB Schweiz AG | Inverter circuit with low inclination towards oscillations |
| JP4626185B2 (en) * | 2004-05-28 | 2011-02-02 | パナソニック株式会社 | Common mode noise filter |
-
2007
- 2007-02-12 DE DE102007006840A patent/DE102007006840B3/en active Active
- 2007-09-05 WO PCT/EP2007/059286 patent/WO2008098628A1/en active Application Filing
- 2007-09-05 CN CN200780050584.1A patent/CN101595639B/en active Active
- 2007-09-05 US US12/526,381 patent/US8188807B2/en active Active
- 2007-09-05 RU RU2009134172/09A patent/RU2400912C1/en active
- 2007-09-05 EP EP07803248A patent/EP2119004A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| RU2400912C1 (en) | 2010-09-27 |
| US8188807B2 (en) | 2012-05-29 |
| DE102007006840B3 (en) | 2008-04-24 |
| WO2008098628A1 (en) | 2008-08-21 |
| CN101595639B (en) | 2013-05-22 |
| US20100026424A1 (en) | 2010-02-04 |
| EP2119004A1 (en) | 2009-11-18 |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20231123 Address after: Munich, Germany Patentee after: Siemens Transportation Co.,Ltd. Address before: Munich, Germany Patentee before: SIEMENS AG |
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| TR01 | Transfer of patent right |